EFFECT OF SCIENCE PROCESS TEACHING APPROACH ON PRIMARY SCHOOL PUPILS ACHIEVEMENT IN BASIC SCIENCE AND TECHNOLOGY IN KATSINA STATE, NIGERIA

Transcription

1 EFFECT OF SCIENCE PROCESS TEACHING APPROACH ON PRIMARY SCHOOL PUPILS ACHIEVEMENT IN BASIC SCIENCE AND TECHNOLOGY IN KATSINA STATE, NIGERIA BY Abubakar IBRAHIM B.Sc ED. (UDUS 1995) MED/EDUC/19643/ A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA NIGERIA. IN PARTIAL FULFILMENT FOR THE AWARD OF MASTER DEGREE IN SCIENCE EDUCATION DEPARTMENT OF SCIENCE EDUCATION AHMADU BELLO UNIVERSITY, ZARIA NIGERIA SEPTEMBER,

2 DECLARATION I hereby declare that this thesis titled Effects of Science Process Teaching Approach on Primary School Pupils Achievement in Basic Science and Technology has been written by me. It is absolutely a true record of my research work which has not been presented in any previous work before for a higher degree or published in a book. In the course of writing this thesis, various sources of information had been consulted and these had been fully acknowledged by means of references Ibrahim Abubakar Date - 2 -

3 DEDICATION This research work is dedicated to my late father Alhaji Ibrahim Dan-Adahama may his gentle soul rest in perfect peace amin and my mother Hajiya Hauwa u, my sons, daughters, and my two wives, - 3 -

4 CERTIFICATION This thesis title Effects of Science Process Teaching Approach on Primary School Pupils Achievement in Basic Science and Technology by Abubakar Ibrahim meets the regulations governing the award of Master Degree in Education (M.Ed Science Education) of Ahmadu Bello University, Zaria and is approved for its contribution to knowledge and literary presentation Date Dr. Isa A. Usman Chairman Supervisory Committee Date Dr. (Mrs) F.K. Lawal Member Supervisory Committee Date Dr. M. Musa Head of Department Date Prof. A.A Joshua Dean Post Graduate School - 4 -

5 ACKNOWLEDGEMENT First and uppermost I would like to thank Almighty Allah and express my profound gratitude to Him through whose Mercy I was able to undertake this study. I specially express my sincere gratitude and appreciation to my first supervisor in person of Dr. Isa A. Usman for the co-operation, moral support and encouragement, scholarly advice and constructive critisms that I received from him may Allah reward him abundantly. I also wish to express my gratitude and appreciation to my second supervisor Dr. (Mrs.) F. K. Lawal whose assistance to me was also instrumental to the successful completion of this study may Allah reward her, amen. I am very grateful to Prof. A. M.M. Shaibu, Dr. S. S. Bichi, Dr. (Mrs.) S. B. Olorukooba, Prof. J.S. Mari, Prof. I.O. Inekwe, Prof. E. Gyuse, Dr. S.S. Obeka, Dr. (Mrs.) T.E. Lawal, Dr. (Mrs.) J.O. Olajide, Dr. M.M. Atadoga, Dr. (Mrs.) M.A. Lakpini for their contributions and moral support. I also thank the authorities of Federal College of Education, Katsina for granting me the opportunity to further my education and of course all those who have in one way or the other been instrumental towards the successful completion of this work. My sincere gratitude also goes to Ibrahim Usman, Sabiru Dahiru Yusuf, Malam Ibrahim Abdullahi all of Integrated Science Department F.C.E. Katsina for their support and assistance. I thank the management, staff and pupils of Sabon-gida and Sabuwar-unguwa primary schools especially my research assistants Malam Jafar Ahmad and Malam Yusuf Abubakar for kind assistance during the conduct of the experiment. I wish also to thank Alhaji Aliyu Sani Masanawa Executive Director I and A Maritime Services and Alhaji Yusuf Barmo, Executive Secretary, Katsina State Local Government Pension Board for their moral and financial support may Allah the most high reward them abundantly amen

6 Finally I am grateful to my wives Husaina Umar and Maryam Abbati, all my sons and daughters for their patience and prayers offered for me throughout the period of my study

7 ABSTRACT This study was carried out to determine the effects of science process teaching approach on primary school pupils academic achievement. The study sample consisted of two classes of different primary schools, one experimental with 88 pupils and the other one as control had 164 pupils. A random sampling technique using balloting method was used in selecting the two schools out of 31 public primary schools in Katsina metropolis, with a total population of 57,402 pupils in the metropolis. A pretest-posttest quasi-experimental design was used. The instrument used was Basic Science and Technology Achievement Test (BSTAT) which was validated and with reliability coefficient of r = The hypotheses stated were tested using t-test statistics at P 0.05 level of significance. Major findings of the study revealed that there is significant difference in the academic achievement among primary school pupils exposed to science process teaching approach and those exposed to conventional teaching method in favour of experimental group. There is also significant difference in the academic achievement of male pupils exposed to science process teaching approach and female pupils exposed to the same treatment in favour of the male pupils. In light of the findings from this study, the following recommendations were offered. Government concerned with the responsibilities of managing the affairs of primary schools should design special training programs for basic science and technology teachers so as to keep them abreast with the current development in methodology of teaching and new innovations that are being invented by educational researchers among others

8 TABLE OF CONTENT Page Title Page......i Declaration ii Certification.....iii Dedication....iv Acknowledgement....v Abstract......vii Table of Content...viii List of Tables..xii List of Appendices. xiii List of Abbreviation..... xiv CHAPTER ONE: THE PROBLEM 1.1 Introduction Theoretical Framework Statement of the Problem Objectives of the Study Research Questions Null Hypotheses Significant of the Study Scope of the Study Basic Assumptions

9 CHAPTER TWO: LITERATURE REVIEW 2.1 Introduction National Policy on Education and Primary Science Teaching Psychological Theories and Primary Science Teaching Problems Associated with Primary Science Teaching and Learning Science Teaching Methods Lecture Method Inquiry Method Project Method Discussion Method Demonstration Method Field Trip (Excursion Method) Science Process Skills Approach The Process Skills in Sciencing Process: Observing Process: Measuring Process: Process: Classifying Process: Inferring Process: Predicting Process: Communicating Process: Interpreting Data Process: Raising Questions and Formulating Hypothesis Process: Making Operational Definitions Process: Experimenting Process: Controlling Variable

10 Process: Formulation of Mental Models Academic Achievement in Science Education Gender Related Studies in Primary School Science Overview of Similar Studies Implication of Literature Reviewed on the Present Study CHAPTER THREE: MEHTODOLOGY 3.1 Introduction Research Design Population of the Study Sample and Sampling Techniques Selection of Topics for the Study Pilot Testing Instrumentation Basic Science and Technology Achievement Test Validity of the BSTAT Reliability of the Instrument (BSTAT) Difficulty Index of the Instrument (BSTAT) Discrimination Index of the Instrument (BSTAT) Pretest Administration Data Collection Procedure Treatment Administration Data Analysis CHAPTER FOUR: ANALYSIS RESULTS AND DISCUSSION 4.1 Introduction Data Analysis

11 4.3. Summary of Findings Discussion of the Results CHAPTER FIVE: SUMMARY, CONCLUSIONS, RECOMMENDATIONS 5.1 Introduction Summary Summary of Major Findings Conclusions Recommendations Limitations of the Study Suggestions for Further Studies

12 LIST OF TABLES TABLE......Page 2.1 Instructional Modes of Discovery Method Basic and Integrated Science Process Skills Sample of the Study Table of Specification on Topics Table of Specification on BSTAT Items Pupils Mean Score Difference in BSTAT for Experimental and Control Groups Males Mean Score Difference in BSTAT for Experimental and Control Groups Females Mean Scores Difference in BSTAT for Experimental and Control Groups Males and Females Mean Scores Difference BSTAT for Experimental Groups t-tests Analysis of the Mean Scores of BSTAT of Experimental and Control t-test Analysis of the Male Scores in BSTAT of Experimental and Control t-test Analysis of the Female Scores in BSTAT of Experimental and Control t-test Analysis of the Male and Female Scores BSTAT of Experimental and Control

13 LIST OF APPENDICES Appendix Page A Letter of Introduction B SPA Lesson Plan 1 (Experimental Group) C D E F G H I J K L M N SPA Lesson Plan 2 (Experimental Group) SPA Lesson Plan 3 (Experimental Group) SPA Lesson Plan 4 (Experimental Group)...97 SPA Lesson Plan 5 (Experimental Group)...99 Lecture Method Lesson Plan 1 (Control Group) Lecture Method Lesson Plan 2 (Control Group) Lecture Method Lesson Plan 3 (Control Group) Lecture Method Lesson Plan 4 (Control Group) Lecture Method Lesson Plan 5 (Control Group) BSTAT Instrument BSTAT Marking Scheme List of Public Schools in Katsina Metropolis

14 LIST OF ABBREVIATIONS AAAS - American Association for the Advancement of Science ANOVA - Analysis of Variance BSTAT - Basic Science and Technology Achievement Test F.C.E. - Federal College of Education NERDC - National Educational Research and Development Council NOUN - National Open University of Nigeria NTI - National Teachers Institute PPMCC - Pearson-Product-Moment Correlation Coefficient SAPA - Science-A Process Approach SPS - Science Process Skills SPSS - Statistical Package for Social Science STAN - Science Teachers Association of Nigeria SSS - Senior Secondary School USSR - Union of Soviet Socialist Republics

15 CHAPTER ONE THE PROBLEM 1.1. Introduction Science education has been recognized as vital because of the rapid pace of technological change and globalization of the economy which resulted in the need for individuals to have a broad scientific knowledge. On the other hand, the ever growing importance of scientific issues in our daily lives demands a populace who has sufficient knowledge and understanding to follow science and scientific debates with interest, and to engage with the issues science and technology poses, both for them individually, and for our society as a whole (Millar and Osborne, 1998). Science education is an indispensable tool for national development because of the important position it occupies in the development and growth of all nation. Odunisi (2001) observed that the economic and political strength of a nation is always assessed in terms of her achievement in science and technology. This may be the reason why emphasis is placed on the provision of science education at all level of education in Nigeria. The emphasis placed on science and technology along side with the important role it plays towards national development makes it pertinent and practically necessary for science to be taught in an organised and well structured pattern, involving activities for both teachers and students. This will undoubtedly make learning more interesting and meaningful. In contrary, before the mid 1950s science teaching was geared towards memorization and regurgitation of scientific knowledge. Akinmade (1996) observed that most elementary science teachers spend most of their time in the class teaching for memory and comprehension as opposed to teaching for the development of

16 productive thinking skills. This attitude of teacher centered teaching method continued until when the then Soviet Union launched its first satellite (the sputnik) into space in This event necessitates a call for a reform in both the curriculum content and method of teaching across the globe. Several curriculum materials were developed and implemented to reflect this need. This include among others, the Physical Science Study Committee (PSSC), Science A process Approach (SAPA) e.t.c. In these programs, emphasis was shifted from the acquisition of academic knowledge in science through memorization of fact, to quantitative and applied aspect of science. In Nigeria, curriculum changes were stimulated by individuals, professional bodies and institutions who called for changes in Nigeria educational system to reflect peculiar circumstances and what the nation required of an individual that is useful to his community. Such institutions and professional bodies according to Danladi (2003) include the Science Teachers Association of Nigeria (STAN) who developed the Nigeria Integrated Science Project. The Comparative Education Study and Adaptation Center (CESAC) now NERDC who developed the Nigeria Secondary School Science Project (NSSP), and the Primary Education Improvement Program of the then Northern Nigeria in collaboration with Ahmadu Bello University, Zaria. Emphasis in these curriculum materials was placed on learning science through the process of science. This could be achieved through hands-on activity based teaching method which emphasize the acquisition of science skills at the expense of science concept. This is in line with Awodi in Mari (1994) who opined that teachers cannot teach science effectively without employing the process of science, neither can students learn science effectively without employing process of science

17 Science is probably more difficult to define than we often imagine. Science is both content and methodology. While some see science as an objective investigation of empirical phenomena, others see it as a body of knowledge. But broadly speaking, science is a distinct methodology (Frankfort-Nachmias and Nachmias, 1996). Science according to Ogunniyi (1986) is a field of study that is concerned with producing a scientifically literate society. It is an organized body of knowledge. It is a search for meaning or explanation of events in nature. Also Ogunniyi (1986) defined science in terms of methods or processes, that is, what scientists can do; or in term of its product, that is, knowledge in the form of facts, principles, concepts, attributes, laws and theories. Urevbu (1990) defined science as a body of knowledge which has been acquired through experimentation. Science is a tool for achieving technological ends, solving human problems through tentative hypotheses. Science is research; it is an active pursuit of empirical knowledge based on scientific method. It is also an interconnected series of concepts and conceptual schemes that have developed and is developing as a result of experimentation and observations and are fruitful for further experimentation and observation (Conant, 1951 and Urevbu 1990). Shaibu (1992) also saw science as a human complex activity that leads to production of a body of universal statements called laws, theories or hypotheses which serve to explain the observable behavior of the universe or some aspect of the universe. Science is a mode of thinking, a methodology, says (Frankfort-Nachmias and Nachmias, 1996). Science can also be seen as a process of investigation, which requires special skills called science process skills. This is needed in order to achieve the objectives of teaching science

18 at the primary school level as stipulated in the National Policy on Education (FME, 2004). The National Policy on Education (FME, 2004) stated that Primary Education is the key to success or failure of the educational system, since the rest of the educational system is built upon it. Some of the goals of primary education in the policy are to lay a sound basis for scientific and reflective thinking and give the child opportunities for developing manipulative skills and positive attitude that will enable her to function effectively in the society within the limits of her capacity. This may not be realized if primary science teaching is not given proper consideration such as giving the children the opportunity to experience the learning of science. The National Policy on Education (FME, 2004), stated that, Science Education shall emphasize the teaching and learning of process and principles of science through the following goals: cultivate inquiring, knowing and rational mind for the conduct of good life and democracy; produce scientists for national development; service studies in technology and the cause of technological development; and provide knowledge and understanding of the complexity of the physical world, the forms and the conduct of life. According to Uyoata (2006) early exposure of primary school pupils to science would lay a solid foundation for scientific literacy and learning of science at the higher level of education. It is in line with these goals that Cirfat and Zumyi (2007) stressed that improving science education has to start at the grassroots. Thus, the

19 philosophy catch them young for science. The success or failure in primary science would more or less determine the success or failure of science education of a nation (Leghara and Okafor 2006). Stanley (2007) observed that the purpose of science teaching is to make pupils learn or understand what they are taught. In this direction, Nwoji (2007), pointed out that for the Nigerian child to understand science concepts, the science curriculum must be part of the culture of the child. Therefore, the knowledge a child acquires in the process of doing is a product of the activities context and culture in which it is developed and used. Nwoji (2007) further stated that science is acknowledged as an important part of every child s education, yet in many countries, including Nigeria, there is much evidence to suggest that primary science education is still in a parlous state, due to the way it is being taught. Ogunleye (2008) in his write up emphasized that unless teachers of primary school shift from conventional lecture method to science process skills approach, the teaching and learning of science will continue to be with problems. Therefore in this study the effect of science process approach teaching method on primary school pupils academic achievement in basic science and technology will be investigated. According to Urevbu (1990) in teaching science, we need to ask ourselves two basic questions: 1. what do we teach? And 2. How do we teach it? He went ahead to explain that, the first question involves issues relating not only to the content of the school program, but also to the totality of the approaches towards science instruction. This, he stated, involves the content and the structure of discipline. The second question relates to the actual classroom and laboratory teaching and how teachers help the individual pupils to acquire scientific skills. Without the effective use of science process skills, the issue of relating to content, classroom and laboratory teaching will be in jeopardy

20 According to Chukwuemeka and Nwosu (2008) science process skills are the generalizable and transferable intellectual and physical capabilities. Chukwuemeka and Nwosu (2008) went on to explain that these skills are needed to learn the concepts and broad principles used in making valid inductive inferences which are reflective of the behaviors of the scientists. These skills they stated include observing, measuring, classifying, communicating, predicting, inferring, questioning, controlling variables, hypothezing, defining operationally, formulating hypotheses and models, designing experiments and interpreting data. Saat and Abubakar (2005) viewed science process skills as the foundation for scientific inquiry, and the knowledge is developed inductively from sensory experiences. These skills consist of basic and integrated science process skills. However, majority of the primary school pupils are at the concrete operational stage, hence the use of basic process skills at that level. Teachers effective manipulation of classroom environment facilitates the learners interactions with material resources which may enhance effective acquisition of functional knowledge in science and acquisition of science process skills. The acquisition of science process skills is a demand of the basic science core-curriculum hence, the need for all primary science pupils to acquire the skills to ensure the implementation of the curriculum (Chukwuemeka and Nwosu 2008). Ivowi (2006) mentioned that there is the need to impart into children scientific skills. This is to prepare them for future activities and contribution to national development. Science process teaching approach will as well make the pupils to acquire the science process skills. From the foregoing, therefore, the issue of poor performance in science has been of great concern to many scholars. Rosier (1990) reported that the performance of Nigerian primary school pupils in science when compared with pupils from other

21 developed countries of the world, such as United State of America, Britain, and Australia, is unsatisfactory. The effect of poor performance of pupils in science at the primary level has been attributed to so many factors such as attitude toward science, use of inappropriate method of instruction as most teachers used conventional lecture method of instruction, lack of use of instructional materials, as well as lack of the use of appropriate teaching strategy that would aid the academic achievement of pupils at the primary school level. According to Mari (2001) science process skills approach is not gender friendly, who found out that science process skills are more effective in promoting the acquisition of the skills in females than in their male counterparts. Also the findings of Mari (2001), revealed the existence of superiority in performance of female students over their male counterparts in tasks involving science process skills. Therefore, this study, intends to investigate the effect of science process teaching approach on primary school pupils, achievement in basic science and technology. 1.2 Theoretical Framework According to Piaget (1961) the child s mental process is limited to thinking about things when the age is 6 12 years. The child s concepts of quantity, time, space, conservation and reversibility develop during this period. The learner can classify things at this stage and he acquires logical process of observation, describing, classifying and measuring real objects. Learning should go from simple to complex and importantly the learner should deal with concrete materials first before going to complex and he can learn abstract concepts and generalizations. According to Piaget s cognitive theory (1961) has relevance to science teaching, learners must occupy themselves with exploration particularly at the primary stage

22 Problem solving rather than role memorization should be the focus of science. Exploration and interaction with environment using locally available materials should be promoted by the teacher. Science process approach is teaching strategies in which the abilities, potentials, and technical know-how can be developed by experience are used in carrying out mental operations and physical actions, (Ibe and Nwosu 2003). Science process skills therefore, are the processing strategies which scientists bring to bear in solving problems. According to Ivowi (2006), science process skills have the advantage of preparing pupils for future activities and contribution to national development. Similarly, Mei, Kaling, Xinyi, Sing and Khoon (2007) argued that acquisition of science process skills can help pupils do science on their own. In a study conducted by Mari (2001) on science process skills at junior secondary schools, it was found that there is significant improvement in science process skills tasks as a result of the treatment, that the process based instruction is effective in stimulating cognitive growth in students. Also, Mei, et al (2007), supported the use of science process skills in primary schools as the skills enhance pupils conceptual understanding, acquisition of skills which will make pupils relate science to their everyday life, and eventually make them to acquire the process skills and scientific attitudes. 1.3 Statement of the Problem According to Atadoga and Onaolapo (2008) there is a quest for scientific knowledge all over the world, this quest for knowledge and everyone desiring to read and write, and making applications of acquired skills or knowledge pose challenges in the teaching and learning of primary science. The challenges are nationwide, which include; inadequate, competent, dedicated and qualified science

23 teachers to teach science as required in the National Policy on Education and the primary science core curriculum. One of the goals of Primary Education clearly stated in the National Policy on Education (FME, 2004), is to lay a sound basis for scientific and reflective thinking in the pupils. The attainment of the goal seems not to be realistic because of the way pupils are taught as observed by Hou (1994) and Usman (2001) in that pupils generally perform poorly in science, and a number of factors have been identified to influence pupils poor performance in science. The factors include the use of inappropriate teaching methods. Poor performance in science among students in developing countries including Africa is caused by the absence of vocational incentives, lack of awareness of teachers and individual pupil s creativity (Emmanuel and Jonathan 1999). The study on science process skills is not new. Mari (2001) worked on the effect of process skills instruction on formal reasoning ability among SSS students in Kaduna state and concludes that students perform better when taught using science process skills. Also Sani (2007) studied the effectiveness of science process skills approach on remedial science students performance in Jigawa state, and concluded that students learn chemistry concepts better when they are taught using science process skills approach. Therefore, this study sought to investigate the effect of science process teaching approach on primary school pupils achievement in basic science and technology in Katsina state, Nigeria. 1.4 Objectives of the Study The objectives of the study are to; 1. determine the effectiveness of science process teaching approach on academic achievement in basic science and technology

24 2. investigate whether science process teaching approach can enhance academic achievement on male pupils. 3. determine the effect of science process teaching approach on female pupils academic achievement in basic science and technology. 4. investigate the effect of science process skills approach on male and female pupils academic achievement in basic science and technology science when exposed to science process teaching approach. 1.5 Research Questions The study attempts to answer the following questions: 1. What is the effect of science process teaching approach on the pupils academic achievement and those exposed to the conventional teaching method in basic science and technology? 2. What is the difference in academic achievement of male primary pupils taught using science process teaching approach and conventional teaching method in basic science and technology? 3. What is the difference in female pupils academic achievement in basic science and technology taught using science process teaching approach and conventional teaching method? 4. What is the effect of exposing male and female pupils to science process teaching approach on academic achievement in basic science and technology science? 1.6 Null Hypotheses Based on the research questions stated, the following hypotheses are formulated

25 Ho:1. There is no significant difference in the academic achievement of primary school pupils exposed to the science process teaching approach and those exposed to conventional teaching method. Ho: 2. There is no significant difference in the academic achievement of male pupils taught using science process teaching approach and those taught with conventional teaching method in basic science and technology. Ho: 3. There is no significant difference in the academic achievement of female pupils taught using science process teaching approach and those taught with conventional teaching method in basic science and technology. Ho: 4. There is no significant difference in the academic achievement between male and female pupils when exposed to science process teaching approach in basic science and technology. 1.7 Significance of the Study The research study will be useful to the upliftment of science education in the following ways: Sensitize science teachers on the effectiveness of science process teaching approach in basic science and technology teaching. Teachers will appreciate science process teaching approach in primary schools and hopefully use it to develop and improve the acquisition of science process skills of the pupils when teaching basic science and technology. School administrators will appreciate the science process teaching approach and provide the teachers with necessary materials required

26 1.8. Scope of the Study The study will be delimited to two randomly sampled primary schools in Katsina metropolis. There are thirty one public primary schools in the metropolis. The class to be used for the purpose of this study is primary six; one class will also be randomly sampled from each school. The pupils in this class are in the concrete operational stage which is characterized by the ability to solve problems involving concrete objects that can be observed and manipulated (Urevbu 1990). Science process skills according to Esomonu and Onunkwo (2004) are divided into basic and integrated skills, the basic process skills are observing, classifying, communicating, using numbers, measuring, recognizing special relations, inferring, predicting, while the integrated process skills include: defining operationally, hypothesizing, identifying and controlling variables, interpreting data, experimenting, and using models. In view of their stage therefore, basic science process skills approach will be used in this study, to determine their effectiveness on academic achievement of primary six pupils in basic science and technology. 1.9 Basic Assumptions This study is based on the following assumptions: 1. Schools in the study area are taught by qualified science teachers. 2. The schools are using the recommended basic science and technology curriculum for primary school. 3. The topics taught under the study are familiar to basic science and technology pupils

27 CHAPTER TWO LITERATURE REVIEW 2.1. Introduction In this chapter, a critical review of relevant literature will enable the researcher to investigate what is known in the area of study so far in order to see where there is a gap in research that this study can fill. The review is organized into the following sub headings: National Policy on Education and Basic Science and Technology Teaching. Psychological Theories of Learning and Basic Science Teaching Problems Associated with Basic Science Teaching and Learning Science Teaching Methods. Concept of Science Process Skills Approach. Concept of Creativity and Academic Achievement in Science. Science Process Skills and Creativity in Science Studies on Basic Science and Technology Teaching and Learning. Studies on Gender-Related Issues and Academic Achievement in Basic Science. Overview of Similar Studies. Implications of Literature Reviewed on the Present Study

28 2.2. National Policy on Education and Basic Science and Technology Teaching The National Policy on Education (FME 2004) is a document that spells out clearly the philosophy and objectives of education in Nigeria. The government has stated that for the benefit of all citizens, the country s educational goals shall be clearly set out in term of their relevance to the needs of the individual and those of the society. The National Policy on Education came about as a result of the 1961 National Curriculum Conference. The overall philosophy of Nigeria according to (FME 2004,) is to: (a) live in unity and harmony as one indivisible, indissoluble, democratic and sovereign nation founded on the principles of freedom, equality justice; (b) promote inter-african solidarity and world peace through understanding. The five main national goals of Nigeria, which have been endorsed as the necessary foundation for the National Policy on Education, are the building of:- (a) a free and democratic society; (b) a just and egalitarian society; (c) a united, strong and self-reliant nation; (d) a great and dynamic economy; (e) a land full of bright opportunities for all citizens. The primary education according to National Policy on Education (FME 2004), is the education given in institutions for children aged 6 to 11 plus. Since the rest of the education system is built upon it, the primary level is the key to the success or failure of the whole system. The goals of primary education are to:- (a) inculcate permanent literacy and numeracy, and ability to communicate effectively; (b) lay a sound basis for scientific and reflective thinking;

29 (c) give citizenship education as a basis for effective participation in and contribution to the life of the society; (d) mould the character and develop sound attitude and morals in the child; (e) develop in the child the ability to adapt to the child s changing environment; (f) give the child opportunities for developing manipulative skills that will enable the child function effectively in the society within the limit of the child s capacity; (g) provide the child with basic tools for further educational development, including preparation for trades and crafts of the locality. The National Policy on Education (FME 2004) stated that science education shall emphasize the teaching and learning of science processes and principles. This will lead to fundamental and applied research in the sciences at all levels of education. The goals of science education shall be to: (a) cultivate inquiring, knowing and rational mind for the conduct of a good life and democracy; (b) produce scientists for national development; (c) service studies in technology and the cause of technological development; and (d) provide knowledge and understanding of the complexity of the physical world, the for and conduct of life. Also the National Policy on Education (FME 2004) stated that the minimum qualification into the teaching profession shall be the Nigeria Certificate in Education (NCE), with the aim of producing highly motivated, conscientious and efficient classroom teachers for all levels of our educational system. The above policy is not without problems of implementation. For example, Ogunleye (1999) mentioned that majority of teachers in Nigeria have not attained the NCE qualification, despite the current government policy which stipulates that

30 no teacher with less than Grade 2 Teachers Certificate must be allowed to teach at the primary school level by 1995 and no teacher without a minimum of NCE must be allowed to teach from For instance, Ogunleye (1999) stated that by 1991 Katsina state has only 41.78% qualified primary school teachers. Other areas of concern according to Ogunleye (1999) are inadequate availability of school facilities like classrooms and furniture, inadequacy of laboratory, apparatus and equipment, lack of textbooks and so on. In this study therefore, the effects of science process teaching method on primary school pupils academic achievement in basic science and technology will be investigated Psychological Theories and Basic Science and Technology Teaching According to the behaviorist school of psychology, learning is an individual experience. Whenever an individual s behavior is modified, learning is said to have taken place: the individual can act or think differently, or acquire new knowledge or skill. The bulk of the problem of science teaching in Nigerian schools today according to Aina (2007) is attributed to the teachers inability to help students learn science in a meaningful way especially in the absence of laboratories. Science teachers need to understand classroom practices that can facilitate processes leading to effective learning of science. Therefore, theories on how students learn have implications in terms of the way a teacher selects his/her materials and decide on his/her instructional techniques. The learning theories that have had profound impact on the methodology of science teaching at primary level are those of Bruner (1963), Ausubel (1963), Piaget (1968) and Gagne (1970). The work of Piaget (1968) in developmental psychology has become an important guide in the selection of science materials for pupils in basic science. The pioneering

31 study by Piaget on cognitive and mental development offer theoretical analysis of children s thought processes. According to Piaget (1968) at about the age of six or seven, a child enters the concrete operational stage and this stage lasts till age eleven or twelve. During this period, the child s mental process is limited to thinking about concrete things. The concepts of quantity, time, space, conservation and reversibility have developed. The child can also understand the relationship of classes, ratio and numbers. Logical processes such as observing, describing, classifying and measuring real objects can take place. A characteristic of this period is also the fact that children like to be active and desire to play with other children. They generally frown at being isolated or confined. They enjoy running around, playing games and do not like to be idle or bored. The implication of this for the basic science class according to Aina (2007) is that the primary years should be viewed as a period of exploration and observation. This is a time for children to examine relationships between man and his physical and biological environment with basic senses of sight, smell, hearing, touch and taste. The emphasis is on hands-on science activities whereby the teacher acts as the facilitator while the pupils is the actor or doer. Thus, the pupils are actively involved in what is being taught, rather than being passive listeners. Young (1988) stated that primary school pupils learn science better if they are involved in their own learning activities, and explanations are given by their teachers using objects like pictures, models, diagrams and other instructional aids. The teacher should avoid complex verbalizations or abstractions. In his contribution to the theory of learning Ausubel (1963) emphasizes meaningful learning as contrasted to rote learning, he maintains that meaningful learning can only occur when what is to be learnt is related to what is already

32 known. In other words, for a stimulus or concept to have meaning, there must be something in the learners conscience, which is labeled as cognitive structure and can provide for interaction necessary for meaningful learning are called subsumers. If a learner does not have a previous subsumer for a new knowledge, Ausubel (1963) proposed that advance organizers may be used. Advance organizers are prior information or complex set of ideas or concepts that is given to the learners before materials to be learned is presented. An organizer is meant to provide stable cognitive structure to enhance meaningful learning and can also increases recall. Bruner (1963) put forward solution to problems in education. This theory promotes the acquisition of knowledge through discovery by oneself through the use of mental processes. It takes place in two ways: 1. The learner encounters a new situation that is similar to one on the element in his existing structure of knowledge and assimilates it with ease. 2. When the learner encounters a new situation which is incompatible with his existing knowledge, he then restructures the existing knowledge in order to create a place in his mind for the new knowledge. Bruner believes that it is only through the exercise of problem solving and the effort of discovery that one learns the heuristic of discovery. Students assume more responsibility for their own learning. Bruner (1963) described four major benefits derived by children when they learn how to investigate and discover for themselves: 1. An increase in intellectual potency. 2. A shift from self-reliance on extrinsic reward to a reliance on intrusive reinforcement, this is because the act of discovery is itself highly pleasant (interesting). 3. Learning the heuristics of discovery

33 4. Discovery facilitates transfer and memory and that frequent use of the discovery methods leads the learner to acquire skill in problem solving. Gagne (1965) in his theory made two distinctions regarding the arrangement of learning situations involves the following: 1. Management of learning. 2. Conditions of learning. Gagne (1965) implies that learning materials should be structured. He maintains that meaningful learning can only take place in gradual step from known to the unknown, it should be possible to break down into some steps, one step slightly higher or lower the preceding step. This he described as hierarchy of learning. The task of the teacher is to break down any information to its hierarchy and the process of breaking down any knowledge into specific knowledge is called task analysis. From the above psychological theories therefore, the issue of pupils need as well as their attitude are both beneficial for the basic science and technology teaching Problems Associated with Basic Science and Technology Teaching and Learning Why teach science at the primary school level? The answer to this question is not far fetched according to Aina (2007), who stated that children are naturally inquisitive; they have a natural tendency to explore their environment. This leads to self experimentation and discovery of certain things. This trait is very instrumental in the study and learning of science. Primary school science thus links the child with his/her environment-both at school and at home, scientific knowledge gained by children is very useful for development in all aspects of life. Aina (2007) mentioned the following reasons for teaching science in the primary school:

34 Application of scientific process skills by children to solve personal life problems. Scientific knowledge and attitude produce good citizenship in children and help to eliminate some unfounded fears and superstitions. Science teaches children how to think and reason logically. Science helps children develop their manipulative skills, through the proper handling of objects and equipment. Science enable children develop social skills through establishing friendship while working cooperatively in groups. Science helps to inculcate in the children the principle of sustainable development i.e. how to sustain resources in the environment. According to Abdullahi (1982), science teachers should be aware of certain general rules which facilitate the selection of appropriate approaches of imparting knowledge or developing a particular skill in pupils. Although these rules are by no means peculiar to science teaching, nonetheless, they have been found to have instructional value for science teaching. In line with the above, Jegede and Brown (1980) stated that a teacher is not expected to know everything, but what is expected of him when teaching science is to present what he knows in a pleasant and interesting manner, capable of generating curiosity in the children. Thus in selecting methodology for science lesson Abdullahi (1982) suggested that, science teacher should consider the following:- 1. The pupils age, their previous knowledge on the topic and their general ability. The method of instruction for a mixed ability class should be different from a method that is employed to teach pupils who are high achievers and homogeneous in ability

35 2. The method should be suitable for the topic to be taught. For instance, in teaching the effect of dilute mineral acids on metals, it will be inappropriate to set up small group discussions. Rather, laboratory experiment or demonstrations will be more appropriate from learning point of view. 3. The science teacher should select the method that he/she can effectively handle. This means that if the teacher feels more competent in the lecture method, regardless of its limitations, that method should be used instead of employing another method which the teacher cannot use effectively. 4. The time the lesson will take place must be put into consideration. If a science lesson is to take place at noon time, it is advisable to select a method which requires students participation. On the other hand, should a teacher select a method that makes the students sit passively, he should not expect to carry students along. 5. The size of the class is another factor to be taken into account. It is of no value instructionally if a discussion method or a demonstration method is used in a class consisting of over a hundred pupils, unless the class could be divided into smaller groups. 6. The resources that are at the disposal of the teacher should be an important guide in the choice of teaching methods. Where there are no materials and equipment for school laboratory experiments, individual laboratory experience or demonstration by the teacher cannot be expected to be effective. In other words, the selection of methods for science teaching should be based on the instructional

36 resources available for an effective use of the method. One cue that can be taken from the above guidelines is that science teachers should not be dogmatic in their choice of methods for class teaching, they should change or vary their methods as many times as the need arises. It is quite possible for a teacher to introduce his lesson with one method, and then goes on to change his method when the lesson is being developed. And, in ending his lesson, the teacher may use yet a different method. The frequency with which we change our method of teaching should depend on the concept or skill or attitude that is being developed in the pupils. In addition to the above, Young (1988), stated that in science lessons, we can teach children some useful knowledge, but notice that this reason for teaching the subject is at the end of the list, for primary school we should be emphasizing the know how of science rather than the knowing. As indicated in most of the theories of learning by psychologists Science Teaching Methods In education the word method means the mode by which the material is communicated from the teacher to the pupil, it is the way teachers impart knowledge and skills while teaching, and pupils comprehend knowledge and acquire the skills in the process of teaching (Rao 2003).According Gbamanja (1991) there is no one method of good teaching. The method to be employed will depend on the subject matter, the students, the teacher and the environmental variables. Therefore, it is very important to know the prevailing conditions regarding time, place and human nature in the shape of learners, teachers, parents, and society generally. Science teachers must be concerned about those conditions and limitations that affect

37 effective teaching of science. Ogunneye (1992) mentioned that science teachers are to vary their teaching methods on the demands of the situation they may find themselves. A combination of two or more methods may better achieve the desired effect than a single method. Rao (2003) stated that there are many methods of teaching but science teacher selects a particular method based on the needs of the content, teaching facilities available, ability of the students and the philosophy of the teacher. Rao (2003) categorized teaching methods into three; namely oral methods include: narration, recitation, lecture and discussion method. Secondly, activity methods include: demonstration method, activity method, project method, laboratory method, heuristic method, discovery learning/inquiry approach, problemsolving method and supervised study. Third category is special methods which include: programmed learning, team teaching, computer assisted learning and personalized system of instruction. Some of the teaching methods will be studied as follows Lecture Method (Chalk and Talk) This method according to NTI (2006) involved a one-way flow of information from the teacher to the pupils. The teacher does most of the activities while the pupils are expected to listen with little or no involvement; it is otherwise referred to as teacher-centered type of instruction. Atadoga and Anaolapo (2008) mentioned that lecture is used for elaborating, simplifying, clarifying and discussing new materials to learners, the material include facts or views on issues and problems related to the learners, which provide an aesthetically stimulating experience. Effectiveness of lecture method depends on the type of students, educational purposes and teacher s own characteristic and skills. FME (2004) stated that lecture method have two merits: